Eppendorf UVette. Instructions for use

Transcription

1 Instructions for use

2 Instructions Eppendorf see Fig. Tab. p. p. UVette for use Copyright 2014 Eppendorf AG, Hamburg, Germany. All rights reserved, including graphics and images. No part of this publication may be reproduced without the prior permission of the copyright owner. Eppendorf and the Eppendorf logo are registered trademarks of Eppendorf AG, Hamburg, Germany. UVette is a registered trademark of Eppendorf AG, Hamburg, Germany. Registered trademarks and protected trademarks are not marked in all cases with or in this manual. U.S. Patent No. 6,249,345 English Instructions (EN) for use /032014

3 Operating instructions 3 1 Operating instructions 1.1 Using this manual Before using the consumables for the first time, read these instructions for use and the operating manual of the device that you use the consumables with. You can find the current version of the operating manual on the Internet at These instructions for use do not replace the device operating manual. 2 Product description 2.1 Features The Eppendorf UVette is a plastic cuvette for single use. For measurements in the UV/Vis range at wavelengths from 220 nm to 1600 nm. For volumes of 50 μl or more. The funnel-shaped design prevents a capillary effect: liquid remains in the center of the measuring window, even with small volumes. 4 optical surfaces 2 optical path lengths in one cuvette: 2 mm and 10 mm. The 10 mm optical path length is marked by an arrow. Rotating the cuvette 90 allows you to select between a path length of 10 mm or 2 mm. Abb. 1:Eppendorf UVette optical path lengths 90 Optical path length 10 mm 2 mm Light path height 8.5 mm Fig. 1: Eppendorf UVette optical path lengths Compatible photometer/spectrophotometer The Eppendorf UVette fits in the cuvette shaft of all Eppendorf BioPhotometers and Eppendorf BioSpectrometers. Adapters for various light path heights are available at Eppendorf for filter photometers and spectrophotometers from other manufacturers.

4 4 Product description 2.2 Sales units Eppendorf UVette, individually packaged Eppendorf UVette, routine pack Starter set Individually blister-packaged Protection from contamination and dust For measurements with the highest cuvette purity standards Valuable samples can be recovered after the measurement For routine applications Fast, easy cuvette access Safe storage in a resealable box 80 individually packaged Eppendorf UVettes and one universal adapter for using the Eppendorf UVette in devices from other manufacturers 2.3 Eppendorf purity grades Eppendorf Quality PCR clean Protein-free Batch testing (certified) for the following purity criteria Free of human DNA DNase-free RNase-free Free of PCR inhibitors Protein-free Eppendorf UVette Eppendorf UVette, individually packaged Eppendorf UVette, routine pack Starter set

5 Safety 5 3 Safety 3.1 Intended use The Eppendorf UVette is a UV-transparent plastic cuvette for single use. It is used for photometric analysis of liquids in the UV range and the entire VIS range. The Eppendorf UVette is used in training, routine and research laboratories, and in the life sciences, industry, and chemistry. In-vivo applications (in or on the human body) are not allowed Operation requires skilled personnel who have been trained for the above mentioned areas. 3.2 Warnings for intended use WARNING! Damages to health due to infectious liquids and pathogenic germs. When handling infectious liquids and pathogenic germs, observe the national regulations, the biological security level of your laboratory, the material safety data sheets, and the manufacturer's application notes. Wear personal protective equipment. For full instructions regarding the handling of germs or biological material of risk group II or higher, please refer to the "Laboratory Biosafety Manual" (Source: World Health Organization, current edition of the Laboratory Biosafety Manual). 4 Operation 4.1 Inserting the cuvette Prerequisites The cuvette is free from contamination by dust or fingerprints and free from scratches. The measuring volume in the cuvette is sufficient. Ensure that the minimum measuring volume has been reached. The measuring solution is free of particles and bubbles. NOTICE! Material damage due to improper handling The cuvette may fall if it is not handled properly. Liquid may spray out. Store the cuvette in a cuvette stand. Do not touch the optical surfaces in the lower part of the Eppendorf UVette. Do not touch the corners of the cuvette (protective gloves may become damaged).

6 6 Operation Eppendorf BioPhotometer/Eppendorf BioSpectrometer 1. Position the cuvette so the required optical path length points toward the light path. 2. When inserting the cuvette, press it completely to the bottom against the slight resistance Inserting the cuvette and adapter in photometers from other manufacturers Function of the adapter Adjust the height of the light beam in the corresponding photometer. Diaphragm function: Hides the light bundle on the cross-section of the Eppendorf UVette measuring window. Reduces stray light Like measurements with commercial, quartz glass ultra-micro cuvettes, hiding the light bundle reduces the upper limit of the photometric measuring range. Therefore, the usable, linear measuring range may be lower than the value specified for the photometer. To calculate the highest absorbance values that can be measured with the adapter/eppendorf UVette, determine the measuring range by measuring a dilution series of the desired wavelength. Additional information is available from the website Precise and reproducible positioning of the adapter and cuvette in the cuvette holder is a decisive factor for the reproducibility of the measurement. 1. Select the adapter that matches the light path height of the device. 2. Insert the Eppendorf UVette in the adapter. 3. Insert the adapter and Eppendorf UVette in the cuvette holder of the photometer. Firmly press the Eppendorf UVette downward. The Eppendorf UVette and adapter must not have any lateral play in the cuvette shaft of the device. 4.2 Measuring blanks and samples NOTICE! Faulty measured values due to incorrect orientation of the cuvette. Always insert the cuvette in the same direction in a series of measurements. Do not rotate the cuvette 180 during a measurement series.

7 Operation 7 NOTICE! Faulty measured values due to repeated use of the cuvette. If the cuvette is used several times, material changes can lead to incorrect measured values. Each cuvette may only be used for a single measuring procedure with one blank value and one sample value. The cuvette blank must be determined again for each cuvette. Limited tempering efficiency The tempering efficiency is limited by the contour of the UVette. If temperature control is required, check to see if the UVette is suitable for your applications. 1. Set the parameter for the cuvette path length in the device. 2. Determine the blank value of the cuvette. Abb. 2:Absorption of the water-filled Eppendorf UVette Absorbance Wavelength (nm) Fig. 2: Absorption of the water-filled Eppendorf UVette 3. Fill the cuvette with the sample. Make sure that liquid does not spray out when solutions are mixed in the cuvette. 4. Measure the sample. Do not use the cuvette at wavelengths below 220 nm or above nm.

8 8 Troubleshooting 5 Troubleshooting 5.1 Error search Symptom/ Cause message Measured values are imprecise. Measured values are not plausible. The blank value and sample value have been measured in different cuvettes. The position of the Eppendorf UVette in the device is not correct. Eppendorf UVette was inserted incorrectly. The Eppendorf UVette was used for more than one measurement. Remedy Measure the blank value and sample value in the same Eppendorf UVette. Press the Eppendorf UVette firmly onto the base of the cuvette shaft or adapter. The Eppendorf UVette must be inserted into the device in the same direction for the blank measurement and sample measurement. The Eppendorf UVette may not be rotated 180. Each Eppendorf UVette may only be used for one measurement (blank measurement or sample measurement). The light path height of the Use the adapter (not with the Eppendorf UVette does not Eppendorf BioPhotometer or match the light path height Eppendorf BioSpectrometer). of the device. The adapter may only be used with the light path height that matches the photometer. The optical path length of Insert the Eppendorf UVette in the the Eppendorf UVette does device so the required optical path not match the value set in length (2 mm/10 mm) is penetrated. the device. If the optical path length has been changed, the blank value also needs to be updated. Set the optical path length parameter in the device (2 mm/10 mm). The wavelength is below The Eppendorf UVette may only be 220 nm or above 1600 nm. used for wavelengths from 220 nm to 1600 nm.

9 Technical data 9 6 Technical data Tab. 1: Dimensions Width Depth Height Filling volume 12,5 mm (0.49 in) 12,5 mm (0.49 in) 36,0 mm (1.42 in) 50 μl 2000 μl Tab. 2: Photometric properties Path length 2 mm, 10 mm Light path height 8,5 mm Wavelength range 220 nm 1600 nm Cuvette blank 0,5 A at 260 nm (absorbance of the water-filled cuvette against air) Cuvette blank scattering s 0,015 A at 260 nm Tab. 3: Shelf life and storage Storage before use Shelf life Protect from sunlight and UV rays. Store dry at room temperature. 5 years The Eppendorf UVette is resistant to Acids Acetic acid 96% Perchloric acid 10% Nitric acid 65% Hydrochloric acid 36% Sulfuric acid 40% Trichloroacetic acid 40% Alkaline solutions Ammonia solution 25% Sodium hydroxide solution 50% Alcohols Ethanol Isopropanol Methanol Other reagents Acetone Acetonitrile DMSO 10% Formaldehyde 40% Water-saturated phenol

10 10 Ordering information The Eppendorf UVette is not resistant to Non-polar solvents Fuel Chloroform Diethyl ether Heptane Hexane Oleic acid n-pentane Petroleum ether Carbon tetrachloride Toluol All substances were tested for a period of 24 hours at an ambient temperature of 23 C ±2 C. 7 Ordering information Order no. (International) Order no. (North America) Description Eppendorf UVette 220 nm nm Original Eppendorf plastic cuvette, PCR clean, Protein-free μl, 80 pieces, individually packaged Eppendorf UVette routine pack 220 nm nm Eppendorf Quality μl, 200 pieces, reclosable box Cuvette stand for 16 cuvettes Adapter for photometers/spectrophotometer with light path height mm mm mm mm Eppendorf UVette starter set pieces of UVette, 1 universal adapter for light path height 15 mm, convertible to 8,5 mm Information on additional adapters can be found online at:

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